hamilton



2 Sheets-Sheet A1.

Patented 11910.15, 1887.

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1 E. M. HAMILTON.

T'YPBWRITING MACHINE. No. 357,667.

Q Q Q Q @C Q 2l Sheets-Sheet 2.

(No Model.)

E M l HAMILTON T YIE WRITING MACHINE.

No. 357,667. Patented-Feb. l5, '1887.`

understood by examining Fig. 1.

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EMERY M. HAMILTON, OF NEV YORK, N. Y.

TYPE-WRITING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 357,667, dated February 15. 1887.

Application filed June 30, 1884.' Renewed December 2, 1886. Serial No. 220.528. (No model.)

.To @ZZ whom it may concern.-

Be it known that I, EMERY M. HAMILTON, of the city, county, and State of New York, have invented a new and useful Improvement in Type-Writing Machines, of which the following is a specification, reference being had to the accompanying drawings, forming part of the same, in which- Figurel is a vertical central section of a machinecontaining my invention. Fig. 2 is a plan of the key-board and base-board of the machine, together with a set of feed-levers ar ranged in a circle, by which the universal lever for operating the feed-movement is actuated. Fig. 3 is a plan of the paper-carrier and feed-movement. Fig. 4. is a detached view ot' said movement. Fig. 5 is a plan or face view ofa spider-spring or series of springs radiating from the edge of a central disk, to be more particularly described. Figs.I 6 to 16, inclusive, are detailed views of detached parts, hereinafter described.

My present invention comprises certain improvements upon the type-writing machine for which an application for Letters Patent was iiled by me in the United States Patent Office on the 13th day of March, 1884, Serial No. 123,980. The improvements relate tothe mechanism whereby the intermittent step-by step movement is given to the paper-carrier for feeding the paper to the type; and it consists in the devices and combination of devices herein described and claimed.

' The general plan of the machine to which my present improvements are applied will be It embraces aseries of type-levers arranged radially around a circle in a horizontal plane, or nearly so, each lever carrying on its inner end a type. These levers are mounted in a circular framework and arranged to be actuated by keys and intermediate levers and crank'arms, whereby the types on the type-levers will severally be thrown to the center of the circle against the paper by the depression-of the keys. In Fig. l are shown two of the type-levers, a c', and crank-arms b b', rack-bars and ratchets for actuating the crank-arms, several of the keys c, the circular frame-work A, in which the typelevers are mounted, and the paper-carrier formed of rollers B B mounted on a plate, C, to slide in a frame, D, over the center of the circle of type-levers.

` in printing.

As before stated, my present invention relates to mechanism by which the paper-carrier is carried across the face of the machine from right to left by anintermittent step-by-step movement for presenting the paper to the type I will proceed to describe this mechanism.

The carrier-plate C, Fig. 3, has connected to its front edge a toothed bar, E.

v F is a swinging arm pivoted at e on the frame D.

H is a dog or detent pivoted at d in the arm F, and arranged to engage the teeth onbar E, and I is a spring which acts to swing the arm F to the left and thus force the carrier C in that direction by means of the said rack-bar and dog.

J is an arm projecting from the edge of F, and K is a belt-crank lever pivoted at f on a standard,f, Fig. 1. This lever in my machine performs the oftice of what is known in such machines as a universal lever,77 and is therefore so denominated where mentioned in this specification, it being a lever that is actuated by the movement of any one of the key-levers. One arm, g, of this lever extends upward through an opening in theframe D to engage the arm J, and the other arm, g', of

said lever extends horizontally to the center of the machine, and is there forked onto the upper end of a sleeve or thimble, L, which is provided with an annular groove to receive the fork g2, Fig. 14., ofthe arm g. The said short thimble is fitted onto a pin, h, fixed in the baseplate t of the machine, so that thethimble may move up and down on said pin. On the lower end of said thimble L is formed a broad head or ilange, j.

Aseries of levers, (indicated by the letter an) several of which are shown in Fig. 2, and three of them in Fig. 1, is provided, the number corresponding with the number of typelevers arranged radially, like the latter, in a horizontal plane around the center of the machine,with the inner ends to rest upon the upper face of the annular flangej of the head of the thimble L. These levers pass through and are pivoted in openings formed in an annular ilange or rim, M,l projecting upward from the base-plate 'i of the machine. These openings are so formed that while they permit the levers to be rocked in them as on a pivot the levers are not permitted to move upward and ICO -t, secured iu the frame I).

downward at the pivotal point within the open` ings, a cap, M, being secured upon the top of the fiange M.

'Ihe outer ends of the levers rest, respectively,on the upper ends of the short shafts m, with which engage, respectively, the series of key-levers that aetuate the rack-bars o, by which motion is communicated from the keys c to the type-levers@ through the crank-arms b, the said rack-bars being formed on and proj eeting upwardly from the shafts m. through holes in the outer ends of the levers a.

A series of springs, o, formed on and extending horizontally from the edge of a central disk, N, as shown in Fig. 5, (which together Ihere denominate a spider-spring,77 rest down upon the levers a, the said disk being placed centrally in the machine, a central circular opening in said disk fitting down over the thimble L. The action of these springs is to depress the outer ends of the levers a, maintaining them in contact with the upper ends ofthe shafts m, and thus to elevate their inner ends.

The dog H is forn1ed,as represented in Fig. 3, with an elbow, the outer limb, s, of the dog being inclined at an angle of about forty-five degrees to the inner limb.

t is a stop-pin fixed in the frame I) and against which the dog impinges as it is carried to the left, and thus constitutes a stop beyond which the dog cannot be carried, said stop being placed relatively to the dog so that said dog shall be stopped when it has shifted the rack-bar the distance of one tooth.

o' is a spring secured at one end to the outer end of the bar F, the opposite free end resting against the pivoted end of the dog H, the same being formed, as represented plainly in Fig. L1, so that the spring acts to force the free end of the dog into engagement with the rack-bar E, while the'dog is permitted to ride over the teeth of the rack-bar when it is drawn to the right.

Provision is made by which the dog may be disengaged from the rack-bar, thus permitting said bar, together with the paper-carrier C, to be shifted to the right. This consists of a pin, W'hen the bar F is swung to the right a sufficient distance, the dog will ride on the pin f.' out of engagement with the rack-bar, and said bar is made to perform the requisite movement by a sufficient depression of any one of the keys, thereby giving the necessary movement for the purpose to the bell-crank lever K.

The operation of this mechanism in aecomplishing the step-by-step movement of the paper is as follows: The depression of any one of the keys c will throw upward its corresponding shaft, ymf, whereby the outer 'end of the corresponding lever, a, is raised and its inner end depressed, carrying down with it the thimble L and also the arm g of the universal lever K. By this movement the upper end of the arm g of the said lever is forced against the arm J on the bar F, thereby swinging the said arm F to the right on its pivot, and thus shifting the dog H from the notchin the rack-bar E, in which it was resting, to the next notch to the right. Then when the key c is released the spring I will act to swing the arm F back to the left, whereby the bar E, with the carrier to which it is attached, is moved to the left the distance of one tooth of the bar E. At the same time the arm J throws the arm g of the lever K back to its first position, thus raising the thimble L to its first position also, while one of the spider-springs,

acting to depress the outer end of the lever n, carries that end of said lever down upon the removal of pressure from the key c, and also its corresponding shaft, m, and rack bar o, whereby the crank-arm b is revolved and the type-lever a is drawn back, and thus all the mechanism is brought back into the first position, ready for the next feed movement of another notch in the bar. The small shafts m are fitted into longitudinally-slotted tubes p, (a central sectional view of one of them being given in Fig. 6, and across-section of the same in Fig. 7,) the slot in the tube being provided to allow the ends of the key-levers I (two of which are shown in Fig. I) to move up and down in the said tubes.

Figs. 8 and 9 are respectively a side elevation and an end view of the shaft m and rack-bar o. Figs. 10 and l1 are respectively edge and side views of one of the levers a. Figs. l2 and 13 are an end view and a side elevation, respectively, 0f the thimble L detached from the machine. Fig. 15 is a side view ofthe universal lever before mentioned. Fig. 14 is an edge view of the forked arm g ofthe said lever, and Fig. 1G is a central vertical section of the annular flange or rim M, with its openings for the levers n.

lhat I claim as my invention, and desire t secure by Letters Patent, is-

l. In a typewriting machine, the combination, with the carriage-actuating mechanism, of a series of levers, a, constructed and arranged,as dcseribed,to bc actuated by the keylevers P, and a universal lever, K, arranged and constructed as described, and actuated by each and every one of the levers n, substantially as and for the purpose described.

' 2. In a type-writing machine, the combination of a series of levers, a, key-levers P,shafts m, the fianged thimble L, universal lever K, and pivoted bar F, provided with the arm J,

IIO

the spring I, and dog H, as and for the pnr- 

